You might also look into "Comet" - Google that word *with* the term AJAX and
read about it. I think this may be more suited to what you are doing than
'AJAX' per se.

Jason Bunting

> -----Original Message-----
> From: Discussion of advanced .NET topics. [mailto:ADVANCED-
> [EMAIL PROTECTED] On Behalf Of Peter Vertes
> Sent: Thursday, January 25, 2007 10:14 AM
> To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
> Subject: [ADVANCED-DOTNET] Streaming Data to a Webpage
> 
> Hello List,
> 
>     I've been presented with an interesting project but after doing some
> research into it I believe it is impossible to do with the requirements
> given by the client.  The client would like to stream data to a webpage
> and
> the webpage should display the updates delivered by the data as close to
> real-time as possible.  For instance imagine a DataGrid that has 10 ticker
> symbols in it.  Whenever the price changes for a symbol the backend pushes
> the changed prices and symbols into a DataSet and the DataGrid (which is
> bound to the DataSet) shows the updated prices.  The requirements of the
> client are that the users should not have to download/install anything
> onto
> their computers and no ports should be needed to be opened on the firewall
> besides ports 80.  I've been doing some research into this but I'm not
> getting too far.  I've tried opening a socket from ASP.NET but I can't get
> updates without a refresh to the page.  I've looked into an AJAX solution
> but with AJAX you can't have an open socket.  To be honest I think the
> only
> way this could be possibly done is either via a Java applet or with some
> ActiveX component (although I'd prefer Java over ActiveX programming).
> Before I told the client that besides a Java Applet solution the project
> could not be done I thought I'd check with the list and ask for opinions
> or
> other words of wisdom.  Am I right by thinking this can only be done with
> a
> Java applet or is there another solution out there that I haven't explored
> ?  Better yet; has anyone done anything like this before ?  Thanks for all
> ideas/comments in advance...
> 
> -Pete
> 
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